gcc/testsuite/c-c++-common/tsan/mutexset1.c

   1 /* { dg-shouldfail "tsan" } */
   2
   3 #include <pthread.h>
   4 #include <stdio.h>
   5 #include <unistd.h>
   6
   7 int Global;
   8 pthread_mutex_t mtx;
   9
  10 void *Thread1(void *x) {
  11   sleep(1);
  12   pthread_mutex_lock(&mtx);
  13   Global++;
  14   pthread_mutex_unlock(&mtx);
  15   return NULL;
  16 }
  17
  18 void *Thread2(void *x) {
  19   Global--;
  20   return NULL;/* { dg-output ".*" } */
  21
  22 }
  23
  24 int main() {
  25   pthread_mutex_init(&mtx, 0);
  26   pthread_t t[2];
  27   pthread_create(&t[0], NULL, Thread1, NULL);
  28   pthread_create(&t[1], NULL, Thread2, NULL);
  29   pthread_join(t[0], NULL);
  30   pthread_join(t[1], NULL);
  31   pthread_mutex_destroy(&mtx);
  32   return 0;
  33 }
  34
  35 /* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
  36 /* { dg-output "  Read of size 4 at 0x\[0-9a-f\]+ by thread T1 \\(mutexes: write M\[0-9\]\\):.*" } */
  37 /* { dg-output "  Previous write of size 4 at 0x\[0-9a-f\]+ by thread T2:.*" } */
  38 /* { dg-output "  Mutex M\[0-9\] created at:.*" } */
  39 /* { dg-output "    #0 pthread_mutex_init.*" } */
  40 /* { dg-output "    #1 main (.*mutexset1.c|\\?{2}):\[0-9]+.*" } */